We have an issue with both Amazon and USPS (not sure if the delivery driver is the same or separate) where the driver will sometimes leave half the mail/packages for the block in our apartment's mail room. My theory is we must be at the end of a route and laziness kicks in or something. It's pretty frequent, and the mail is usually for addresses on our block that are nearby, or the address one block over that has the same building number. I try to redeliver them when I see it, and I have complained before (which helped for a time, but I never really nailed down which delivery service was the culprit). There didn't seem to be much interest from the customer services in solving the problem.

Long story short, check your neighbors porches (as well as you can without being creepy) and see if it's been misdelivered or dumped at another part of the route. If you live near Walnut in Shadyside, PM me because we might get your mail lmao